Silver nanoparticle based antibacterial methacrylate hydrogels potential for bone graft applications
M Isabel González-Sánchez1, Stefano Perni2, Giacomo Tommasi3
1Department of Physical Chemistry, School of Industrial Engineering, Castilla-La Mancha University, Albacete, Spain; Department of Physical Chemistry II, Complutense University of Madrid, Madrid, Spain; School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK.
Summary
This study integrates silver nanoparticles into artificial bone graft materials to combat antibiotic-resistant infections. The research demonstrates a novel, non-antibiotic approach to enhance orthopedic biomaterials against common bacteria.
Area of Science:
- Biomaterials Science
- Orthopedic Surgery
- Nanotechnology
Background:
- Post-orthopedic procedure infections are a significant clinical challenge.
- Rising antibiotic resistance necessitates novel antibacterial strategies.
- Artificial bone grafts offer advantages over natural bone grafts, including availability and reduced rejection rates.
Purpose of the Study:
- To develop an artificial bone graft material with non-antibiotic antibacterial properties.
- To investigate the integration of silver nanoparticles into acrylate-based nanocomposite hydrogels.
- To evaluate the antibacterial efficacy against Staphylococcus epidermidis and Methicillin-resistant Staphylococcus aureus.
Main Methods:
- Silver nanoparticles were integrated into a mineralized biomaterial using three methods: entrapment, diffusion, and adsorption.
- Two different crosslinking degrees of the hydrogel were tested.
- Antibacterial activity was assessed against Staphylococcus epidermidis and Methicillin-resistant Staphylococcus aureus.
Main Results:
- Silver nanoparticle integration provided non-antibiotic antibacterial activity.
- The adsorption method of nanoparticle integration was generally most effective.
- Extended adsorption times (over 2 days) led to decreased antibacterial activity.
Conclusions:
- Silver nanoparticle-functionalized hydrogels show promise as antibacterial bone graft substitutes.
- Optimizing silver nanoparticle integration methods is crucial for maximizing efficacy.
- This approach offers a potential solution to combatting orthopedic infections in the era of antibiotic resistance.
